#IPv6 Static Route
- A correction
- IPv6 header
- NDR (Neighbor Discovery Protocol)
- SLAAK
#==================================================================================
# :: use only left side instead right if they are present at the address
# Use lower-case instead upper-case
# IPv6 version is fixed in the Packet header 4 bits and in binary it looks like 0b0110 (in decimal=6)
# Next 8 bits - it is QoS
# Next 20 bits - flow traffic
# Next 16 bits - payload
# Next (Next header) 8 bits - TCP or UDP (Protocol field in IPv4)
# Next (Source address) - 128 bits
# Next (Destination address) - 128 bits
#==================================================================================
# Solicied-node multicast address - it is like ARP in IPv4. It helps devices to find each other
# -works in chanell layer, using NDP
# -FF02::1:FFXX:XXXX, where XX:XXXX the last 24 bits of the device unicast address
# Example: 2001:DB8:1A2B:3C4D:5E6F:7A8B
# -- ---- 24 bits
# The solicied-node multicast address will be:
# FF02::1FF6F:7A8B
# FF02::1<-------- Multicast All nodes and hosts (like broadcast)
#
# NS=ICMPv6 Type 135 - Request
# NA=ICMPv6 Type 136 - like ARP reply
#
# NDR uses two messages
# 1. Router Solicitation (RS)=ICMPv6 Type 133
# -sent to multicast address FF02::2 (all router)
# and asks all routers on the local link to identify themselves
# -sent when an interface is enable/host is connected to the network
# 2. Router Advertisement (RA)=ICMPv6 Type 134
# -sent to multicast address FF02::1 (all nodes and hosts)
# -the RA its presence, as well as other information about the link
# -these messages are sent in response to RS messages
# -they are also sent periodically event if the touter hasn`t recieved any RS
#
#
#SLAAC (Stateless Address Auto-Configuration)
# Hosts use RS and RA messages to learn IPv6 prefix on the local link (ie 2001:DB8::/64)
# and then automatically generate an IPv6 address.
# Using the IPv6 address prefix/prefix-length EUI-64 command, you need to manually enter the prefix
#
# Using the IPv6 address autoconfig command, you do not need ti enter the prefix.
# The device uses NDP to learn the prefix used on the local link.
# The device will use EUI-64 to generate the interface ID, or it will be randomly generated
# depending of the device or maker
#
#
# DAD (Duplicate Address Detection)
# Just know, it exists )
# IPv6 routing is disabled by default, and must be enable
enable
configure terminal
ipv6 unicast-routing
# If IPv6 routing is disabled, the router will be able to send and recieve IPv6 traffic, but will not router
# IPv6 traffic. It means won`t forward it between networks
#
show ipv6 route
ipv6 route destination/prefix length {next hop|exit interface [next-hop]} [ad] # ad=Administrative Distance
#
# -Directly attached static route: Only the exit interfaace is specified #doesn`t work with Ethernet interfaces
ipv6 route 2001:db8:0:3::/64 g0/0
# -Recursive static route: Only the next hop is specified
ipv6 route 2001:db8:0:3::/64 2001:db8:0:12:2
# -Fully specified: Both the exit interfaace and next hop are specified
ipv6 route 2001:db8:0:3::/64 g0/0 2001:db8:0:12:2
#Example
# 2001:db8:0:1::/64 2001:db8:0:23::/64
# PC1=============g0/1(R1)g0/0================g0/0(R2)g0/1=============g0/0(R3)g0/1===========PC2
# :100 :1 :1 :2 :1 :2 :1 :100
# 2001:db8:0:12::100/128 2001:db8:0:3::/64
# NETWORK ROUTING
# R1
ipv6 route 2001:db8:0:3::/64 2001:db8:0:12::2
# HOST ROUTE
# R2
ipv6 route 2001:db8:0:1::100 2001:db8:0:12::1
ipv6 route 2001:db8:0:3::100 2001:db8:0:23::2
# DEFAULT ROUTE
# R3
ipv6 route ::/0 2001:db8:0:23::1
# If you need to use Static Float Route, then use ad (Advertisement Distance)
# Example: Balancing with OSPF, then ad=110, with EIGRP ad=90
# Global-scope = 2000::/3 #Public addresses (white IP)
# Link-local scope = FE80::/10 #Generated auto or manually uses for OSPFv3, EIGRP
ipv6 unicast-routing #Enable IPv6 routing
interface GigabitEthernet0/0
ipv6 address 2001:DB8:1::1/64 #Set Global-scope address
ipv6 address FE80::1 link-local #Set Link-local address
no shutdown
# OSPFv3
ipv6 router ospf 1 #Enable the OSPFv3
router-id 1.1.1.1 #Set Router ID
exit
interface GigabitEthernet0/0
ipv6 ospf 1 area 0 #Add the interface to OSPF Area
# EIGRP for IPv6
ipv6 router eigrp 10 #Enable the EIGRP
router-id 1.1.1.1 #Set Router ID
no shutdown #Enable routing process
exit
interface GigabitEthernet0/0
ipv6 eigrp 10 #Activate the EIGRP on the interface
# RIPng (ng = Next Generation)
ipv6 router rip RIP_LAB #Enable RIPng
interface GigabitEthernet0/0
ipv6 rip RIP_LAB enable #Activate the RIPng on the interface
# Loopback-interface (good to testing and to set Router ID)
interface Loopback0
ipv6 address 2001:DB8:2::1/128 #Set Global-scope address
ipv6 ospf 1 area 0 #Add to OSPFv3 process
show ipv6 interface brief
show ipv6 route
show ipv6 neighbors